Thermal response of a partially insulated interface crack due to thermal resistant in functionally graded coating-substrate structure under thermal-mechanical supply
Functionally graded materials (FGMs) are multiple phase materials with spatially and continuously varying thermo-mechanical properties. This paper considers the thermal fracture problem of functionally graded coating-substrate structure of finite thickness with a partially insulated interface crack subjected to thermal-mechanical supply. The heat conduction through the crack region occurs and the temperature drop across the crack surfaces is modeled as the result of the thermal resistant. By using the integral transforms, the equations of heat conduction and elasticity are converted analytically into singular integral equations, which are solved numerically. The asymptotic expressions with high order terms for the singular integral kernel are considered to improve the accuracy and efficiency. Numerical results are presented to illustrate the effect of nonhomogeneity parameters, geometry parameters and the dimensionless thermal resistant on the temperature distribution along the crack surfaces and extended line and the thermal stress intensity factors.
Yueting Zhou Xing Li Dehao Yu
LSEC,ICMSEC,Academy of Mathematics and Systems Science,CAS,Beijing 100190,China China School of Mathematics and Computer Science,Ningxia University,Yinchuan 750021,China
国际会议
南京
英文
1
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）